Deep-well pump.



J. HAHN.

DEEP WELL PUMP.

' APPLICATION FILED MAB.. 1, 1909. Lm.,

Patented Nov. 26, v1912.

UNITED @AWE 'ring' `JOHN HAHN, 0F LOS ANGELES, CALIFORNIA.

DEEP-WELL PUMP.

Specification of Letters Patent. 'Y Patented N'OV- 26, 1912 Application filed March 1, 1909. Serial No. 480,787.

"To all whom it may concern:

Be it known that I, JOHN HAHN', a citizen of theA United States, residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements i'n Deep-fell Pumps, of which the following is arspecitication.

This invention relates to pumps for use' in oil wlells and Water wells from whichwells the standing-valve, the workingbarrel and other parts connected with the suctionrod may be required to be withdrawn through the pump-tubing from time to time for repairs on account of wear or on account of clogging with .sand or for any other reason.

Objects of the invention are cheapness of construct-ion, `conveniente of putting together and taking apart., and security against scratching the, plunger-barrel and the 'standing-valve in the operation of pulling or replacing the same; also the avoidance of clogging with sand, and avoidance of leakage; the provision of` larger fiuid way than is possible with former constructions of oil well pumps, andto provide a sectional working-barrel that in cases where such cups are used.

A further object is toniake provision for etlective high speed action of the plungerj i a valve-way .and terminating below the The invention is applicable with both solid working-barrels and sectional wo-rl iT ing barrels, and in case of the latter a con-I necting-rod may be employed 'between the plunger-barrel and the standing-valve toE draw the sections of the working-barrel out;

and valves.

of the nipple and pump-tubing.

may be of unusual strength and at the same time to make provision for a' comparatively large passage 'through the standing valve,-

v may be' straight and true and will keep in line for the plunger-barrel when put together, and that will be held together friction tight; thereby making the sectional working barrel' practical for oil well puinps and 'thus'greatlv reducing `the cost of repairs to said. pump The new construction and arrangement alsov avoids any danger of injuryto the cups of; the plunger-barrel while pulling the plunger `an outlet.

, granted to me May 30, 1911, 'have shown a pump pro-vided below its standing valve with a conduitvleading vertically todirect liquid to such valve, said conduit being pro- 'vid-ed .with a lateral inlet and having 'an .iinperforate portion .above such inlet, means,

as a pipe forming a chamber outside and around such conduit to intercept air or gas an inlet to direct liquid approximately horizontally toward the inlet of the conduit, au

-perfora-te portion; and have also shown a bushing forming a. 'sea-t for the standing valve cage, the same frictionally engaging said downward extension, and a suction pipe around said extension provided with an imperforate portion. corresponding to tlfat of the downward extension, and also provided below said` imperfoi'ate port-ion with an inlet and above such portion with In said Letters Patent the standing valve cageis'provided with a resilient downward extension and a resilient bushing is provided to seat the cage and to engage i the resilient: portion of the extension; and

-furthermore. the standing valve cage body is shown as formed of a single piecehaving valve-way in a downwardly tapering nearly cvlindrieal spigot, the taper of which is lslight and elongate, and there is also provided an elongate taper seat for and corresponding to said spigot. The featuresvot' said Letters Patent are claimed therein r and for that reason claims therefor. are p A further andwery important object of the `invention isto make p-rovision wherebyy a: standing val-VeiofA very substantial pro portions may be used and the cage therefor' omitted Vfrom this application.

The accompanying drawings illustrate the invention.

Figure l is a fragmental, vertical, sectional elevation of a pump in-place inside a welllcasing and constructed in accordance 'With this vinvention and provided 'with `a sec- Von its way to the conduit, and provided with 'tional working-barrel and a lost-motion con' nection between the plunger-barrel and standing-valve to 4pull the latter and thev working-barrel vwhen desired. Fig. 2 is anfl enlarged, sectional, fragmental view furtherl' illustrating the invention and showing the same-as it may be applied without the sectional working-barrel. Fig. 3 is a cross-section on line w8, Fig. 2. Fig. 4 is a cross-section on line fc4, Fig. 2. Fig. 5 is a fragment' ltal detail of the resilient guide for centering the working-barrel. Fig. 6 is an enlarged fragmental detail illustrating the'construction of the spigot-joint with packing-groove.

Thewell-casing 1 is provided as usual with perforations 2 to admit fluidas oil or water and any gas that may be contained therein, to the anchor 3 which is vprovided with perforations4 to admit the fluid to the extension 5 of the working-barrel 6, and standing-valve-cage 7, 'which extension 5 Amay be provided with perforations 8 and may be open at its bottom 9 to admit the fluid and to allow sandtodrop. out in case of any accumulations. The lower end of said extension 5 is beveled or rounded; as shown at 10, so as to be readily inserted' downwardly through the seat 11 which sup- ,ports the standing-valve'and working-barscrewed onto, a' threaded \neck 113 on," the standing-valvefcage above the tapered Y shoulder 12 which is'provided with an o'set 14 against which the lower end of the working-barrel 6 seats when screwed home. The

upper end of the extension 5 is threaded and is screwed into the tapered lower end of the 'cage 7 which is provided with an internal -shoulder 16 spaced apart from the upper end of the extension 5, between which shoulder and the upper end of the extension 5 is seated afflange 17 of the valve-seat 18 which seats the valve 19 of'the cage in the usual manner. 4Said valve may be of any desired form. The valve shown is constructed after the general form of one previously patented to me in United States Letters-Patent No.'

753,828, dated March 1, 1904; the same being'v provided with a central vertical web' f-with cavities g at the sides thereof to catch the superposed liquid so as to seat .the valve quickly, and also provided with a down-v ing a central cavity the purpose bein to prevent back flow of oil and hammering uring rapid operation of the plunger-barrel.. The seat 11 has a downward extension 20'.

formed of resilient bar s connected together at their lower ends and each provided with an inward bend 21 thus together forming' latches to frictionally engage the standing...

valve extension 5 to operation of the'pump,'but `to allowthelex'- tension to be withdrawn when force is 'applied for that purpose.

The sucker-rodV may sections 22 and 23 connected by a coupling 24 which foi-insa shoulder on-said suckerrod above a loosehead 25 of the workingbarrel 6 on which it is slidingly mounted..

`fyfictiomuiy 'Bold the same against withdrawal during the usual v be-formedof twd Saidhead consists of a centrally-apertured crown j, arms 7a, thatxdependtherefrom, a sleeve m connected with the crown by the arms-and provided at the vlower end with an external shoulder 26 formedby la collar 27 screwed on the lower end of the sleeve Aand provided with" an internals-shoulder 28v to jam against the lower end of the sleeve to secure solidity. The external |shoulder 26 at t-he lower end of the head'engages an internal shoulder 29.,formed in the working-bar- Arel 6 b a thimble 30 that .is provided on its outer ace with a vertical`,series of annular,

corrugations or teeth The head 25 is provided an external annular shoulder 32, the under face of which for-ms a stop to engage the thimble 30. The

upper face 33 of said shoulder slants downwardly and outwardly to engage and distend latches 34 .that are arranged symmetrically around the head and are provided with teeth .35 to engage the vertical series of externall teeth 31 of the thimble 80.` Said latches are pivotally suspended inside the nipple 36 of the pump-tube 37 by means of an outwardly-` projecting heel 38 which restson'top vo'f'a v projecting rim 39 of an upper guide 40 for the working-barrel, which guide is provided' with vertical slots 41 in which thellatehes 34 are mounted to swing; said latches being` provided ati their lower ends with springs; 42

that are wider than the slots 41 amilfare-arranged externally of the guide .40ssvs that 'i h said springs form stops to prevent thev from swinging in too far. Said sprin be fastened to the latches in any suitabas by lugs 43 cast on the latchesmandp through holes 44 in the springs and f then riveted; the latches being made :of malleable iron, brass, steel, 4or other suitablemat'erial for that purpose. The lower ends of the springs are`inwardly` bent as v shown at 45 in order that they may be easily inserted into the nipple 36. The coupling 46 that connects wardly, inwardly sloping lowerI face It hav 'the nipple-36 withthe bottom of tube 37 is provided with an internal inwardly-slanting the vsame are in serted.

apron 47 below its upper internally screwy threaded seat 46. to house the heels 38 of the latches and to direct the standing-valve e'xtension and the working-barrel centrally as The lower section 23 ofthe sucker-rod is connectedwith lt-he cage 48 of the plunger'- barrel 49v which may be loosely connected With the standing-valve through the medium ofithe connecting-rod 50 as shown'in Fig. 1, where the plunger-barrel is provided at its lower fend with a foot-piece 51 surrounding the rod 50 and engaging the head52 of said "rod when the plunger-barrelis drawn suiiiciently above the rtop limit of its' working stroke, thus to pull thestanding-V-alve. The

valve 53 of the plunger-barrel may be of the same characteras the valve 19 of the standing-valve, but, it is to be. understood that latches 34, the seat- 11 and .nipple 36 constitute means for clamping togetherthe Working barrel sections.

rlhe special Y advantage` secured by constructing the working barrel of sections having elongate friction tight joints is that such construction greatly increasesthe facility of securing true alinement of sections of the` working barrel after they are bored so that said Isections may be made interchangeable and can be put together by an ordinary workman and when the barrel is so put together and the sections driven home' the barrel Vis invariably absolutely straight, thus avoiding the injury which occurs through unequal wearing and through excessive friction arising fromv internal irregularities at 4the joints Ywhich are liable to occur in any former construction. vIn this novel 'co-nst-ruction of plunger barrel it is made possible for the workman to take out any'worn section andto replace it with a new section without anyI liability of destroying the alinement of the barrel. In/said joint the inside face of, the upper section is hollowed' above the inserted end, as shown at 55, and the' upper end of the spigot is beveled, as shown, at 56, lso as to make agroove 57 at the end of the joint between the'two parts; the walls ofsaid groove'being aslant upwardly and whenfworn, 'and the working-barrel.

are screwed together.

downwardly so that the liquid will not be squeezed through the joint by rapid operation of the plunger Vbut will circulate in the groove and thereby, form a kind of liquid.- packing to prevent leakage of oil orwater through the joint under high pressures caused by depth ,0f Water above the joint. .Said grooves also afford open spaces aro-und the plunger-barrel at intervals t-herealong to accommodate sand that may accumulate between the upper end of the plunger-barrel accumulations will be washedoutby the oil upon rapid movement of theplunger-barrel past such grooves which are preferably concave.l The upper section 22 of the suckerrod has its body formed of a plurality of longitudi- Such nal blades 58 united at the axisof the rod so l that the rod is cruciform incross-section, the purpose being to secure great rigidity combined with extreme light-ness. lA suckerj rod formed of longitudinal blades is also shown in my co-pending application Serial No. 554,063` filed April 7, 1910.y Said crucis form body is provided at' 'its lower end with a pin 59 screwed int-o a socket 60 of the coupling Q4, said 'coupling being also'providedy with a screw-threaded socket 61 into Which -the upper endA 62- of the rod-section 23 is screwed. Said section 23 cylindricaland passes through an orifice 63 in the loose head 25 of the working-barrel. The sucker-rod may be made in sections 4provided at each end with a pin 59. The seat 11 may 'or may not be externally screw-threaded toscrew into a coupling 64which screws onto and couples-the `nipple36 and the-anchor 3, the

rim of said seat 11 vbeing clamped between said ancho-r 3 and'nipple 36 when the parts ing-valve-cage with its extension attached tol the working-barrel, and said working-barrel with its" cage containing the plunger-barrel will be lowered i-nto theV pump-tubing by means of the sucker-rod, sections of which will be screwed in place as the work proceeds until the extension 5 enters the apron 47 through which it passes on v downwardly until reaching the position shown in Fig, l.

During the downward course of the parts 4carried by the sucker-rod the working-barrel passesbetween .the :latches which temporarily support the parts until the sucker-rod is lowered sutliciently to bring the coupling v.24 against the top of the loose head 25,A

whereupon said loose head may be forced down, thus forcing the parts past the latches 34 until the shoulder 33 comes belowthe shoulders of the latches and the teeth 35 of 'said latches engage the teeth 31 of the thimble 30. V

VWhen the parts are all firmly seated in place as shown in Fig. 2, then power may be connected with the sucker-rod and the operation of pumping proceeded with. The

` smooth and cylindrical section 23 of the 1 pumping-rod moves freelyv through the oritice 63 of the-loose head 25, allowing the plunger barrel to move up and down. The head thus serves as a guide for the suckerrod and prevents lateral movement of the same. thereby avoiding uneven bearing of the plunger-ba1.rel on the working-barrel. The downward extension 5 is provided at its top with gas and air outlets 65, and the an! chor at its top with gas and air outlets 66v below the seat 11, so that gas and air may' lflow out into the wcll-casing 1 and thence to the top of the well. The crown y' of the loose head 25 is beveled to form concavitics p between the arms so that o-n the upward strokes the liquid forced up by the piston will pass thc crown with slight friction and the liability'of clogging hill be minimized. The coupling 46 is oflargr diameter below than above the apron 47 and the nipple 3 6 is screwed thereinto and forms an enlarged acconn'nodate-the heels of the latches 34. The

annular shoulder 32 `on the head of 4the working-barrel serves to aord a spring-seat for the'arms 7c and allows the arms'to be widely spaced apart from each other. and from the sucker-rod 23 so as jto-allow the liquid to flow with minimum friction from the top of the working-barrel, and said shoulder further ai'ordsa packing means to engage the projections 68 on the guide 40' and latches 34 and prevent sand from working down between the workingbarrelaand the nipple. The anchor .3, coupling 64, nipple 36, coupling 38, and upper pumptubin'g 37 constitute parts of the tubing of thepump,

inside which the standing-valveA-s'eat is suspended. By making the standing-valvecage `of` a single piece to serve as the foot of the plunger-barrel it is possible to mount 'inside said cage a valve-seat 18 having ank offset 14 above which is a screw-threaded neck 13 and above that the valve-retaining bail 71 provided internally withribs 72 .and formin a slide-way for the valve 19, said bail iittmg the plain interior of the working barrel 6 and the screw-threaded neck 13 being tightly screwed into the lower end ofthe working barrel and the shoulder 12 forming a downward extending spigot internally screw-threaded to receive the downward eX- tens-i'on the -upper end of which. holds the valve seat 18 in place to support the valve 19. By thus making the standing valve cage of a single'piece fronrhesbottoiof its spigot to the top of itsbail a' great advantage is secured over former'constructions there being possible a much greater thickness ofsolid material in the bail for thepurpose of pulling the w-orkingl barrel by the bail 71; and yet at the same time a larger made. It' is understood that an increase of diameter of the bore through 'the valve seat 1S greatly increases the outputA ofl oil through the valveyand since'the-valve seat is especially subject to wear from the passage therethrough of sand-containing oil it is important that the valve seat be made as substantial ras possible and bymaking the valve, cage of. a single piece the valve'seat` mav be made unusually thick and yet the strength of the cage be unusually great.

Pressure/.linay be applied through the I plunger-rod'- and the 'coupling thereon through'the head of the working-barrel, thus to force the working-barrel down and solidly sea-t the tapering shoulder atl the foot thereof in the standing-valve seat, andthe .latches hold the same solidly in position and prevent jarring loose. When it is desired to pullY the working-barrel, the suckerrod lis first drawn up until the plunger-barrel-cage 48 engages the shoulder 27, thus lifting the loose head 25 and causing its shoulder 33 to .force the, latches 34 outward against the pressure of the springs 42 until the'latchthe thimble 30; whereupon the working-ban teeth`35 are disengaged from the teeth 31 of rel and its attached drawn.

- It is to be understood that the invention is not limited to the specific shape and form parts mayaii be withshown, 'but that it maybe embodied in .va-

the pumpand provided with a taper shoulder to it said seat and also provided with a hollow downward extension to fi'ictionallyl engage said resilient portions.

2. In a pump, the' combination of a coupling, a nipple,l an anchor and a funnelshaped seat between saidnipple and anchor,

- said nipple and anchor being screwed into the coupling and against said seat, a standing-valve having a taper shoulder seated in said seat and a downward extension, and means below said seat to irictional-ly engage saidy downward extension. v

3. In a pump, a coupling, 'a funnel-shaped seat in said coupling, two sections of pump; tubing screwed into the coupling on opposite sides of said seat, a downward resilient extension of said seat, a working-barrel, a downward extension below the workingbarrel. to engage said resilient extension, and a taper shoulder at the lower end of the working-barrel to rest in said Yseat. e 4. In a pump having a piston, 'a working.

barrel comprising a s eries of tubular sec tions surrounding the piston, and means inside of said working-barrel and in slidable relation to the tions together. 5. In a pump, a working lbarrel comprising a series of tubular sections having their adjacent ends correspondingly beveled and forming spigot joints, the inside face of one section being hollowed above 'the inserted end of another section toLform a groove, the walls of said groove being aslant upwardly and downwardly,` and means for clamping said sections together.

6. In a pump, the combination with the pump tubing, a working-barrel composed of sections that. aref united by friction tight elongate spigot-joints, grooves being-formed at the upper ends of the spigots of said joints, the walls of said grooves being aslant upwardly and downwardly for the purpose set forth.

7 In a pump, the combination with 'tubing, of an inserted sectional working-barrel, and guiding springs carried by the tubing for frictionally holding the working-barrel tight in the tubing.

3. In a pump, a working-barrel having a loose head.

piston lfor raising said sec.

loose head and a latch to *retain the barrel,

. said head being providedwith a shoulder to engage said 'latch' to disengage the same from the barrel, and means connected with the sucker-rod of the pump to operate said 9.' Ina pump provided with a pumpplunger and withpump-tubing, a workingbarrel', Vav head therefor having a limited movement relative thereto, a latch for the working-barrel, means on the head to release the latch, and a sucker-rod having a limited movement relative to the head and connected with the pump-plunger to operate the saine and constructed and connected to engage the head to move it downward and.

ing the pump-tubing to hold said latches in enga ement with said teeth, and means operata le by the sucker-rod' to release the latches.- a f 11. In a pump,'a working-barrel provided with a4 vertical series of teeth, pump-tubing, latches-pivdtally connected with the tubing, and sprin slidable inside the pump-tubing to hold said latches in engagement with 'said teeth.

12. In a pump, a workingbarrel, a plunger-barrel therein, a thimble connected with -thei working-barrel and provided with external teeth, a head extending down through the thimble,`and a collar on the lo-wer end of said head to Vengage the lower end of the thimble, said head being provided with shoulders, and latches to engage the thimble -to hold the same down, the shoulders ot' said headpbeing adapted to release said latches when the head is moved up.

13. In a pump provided with upper tubing and a nipple, a coupling between the nipple and the upper tubing, the same being provided with a funnel-shaped apron.

14. The combination with the nipple, voit a coupling screwed onto the nipple and provided with an inwardly-projecting apron, a guide for the working-barrel inside the coupling and resting on vthe nipple and chambered beneathlthe apron.

10. VIn a`pump provided with ar-sucker- 15. The combination with a worliin'g bar- I rel anda nipple, of a coupling screwed onto the nipple and provided with an inwardlyprojecting apron, a guide iorthe working# barrel inside the coupling and resting on the nipple and chamberedbeneath the v apron, the rim of said guide being slotted, and latches provided with heels in said slots. 16. In a pump, pump tubing, a working barrel inside ci? and free from the pumptubing and composedof separable sections and having friction-tight joints, a standing valve fastened to the Working barrel, a plunger barrel inside of the working barrel, and mternal means loosely connecting the standing valve to the plunger barrel to raise and lower the sections together through the pump tubing.

17. In a pump, a Working-barrel compris- .10 ing a series of tubular sections having'their adjacent endscorrespondingly beveled 4and forming spigot joints, there being grooves at said jolnts.'

Iii testimony `whereof, I have hereunto set my hand at Los Angeles, Caliornia, this'l 19th dayfof February,.1909. E r

- JOHN HAHN;

In presence of- JAMES R. ToWNsEND, w M. BEULAH TowNsEND. 

